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Best Insulation Contractors in Aylmer, ON (2026)

24 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Aylmer: Koala Insulation of London, CR Score 83/100; 5.0★ from 21 Google reviews; open 24/7.

  2. 14

    Best for emergencies (open 24/7): Active Environmental Safety, posts 24/7 hours; ranked #14 of 24.

  3. 10

    Most-reviewed: Hometown Heating and Cooling, 827 Google reviews at 4.9★, the most of 24 ranked; ranked #10.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

24 Aylmer insulation contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 7 open Saturdays and 5 open Sundays, based on posted hours. The median Google rating is 4.7★ across 24 rated businesses.

Most of this list also appears on the Insulation contractors in St. Thomas ranking. See Insulation contractors in St. Thomas

Top 10 insulation contractors in Aylmer at a glance

Top 10 insulation contractors in Aylmer at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Koala Insulation of London835.0★ (21)London, 33 km away24/7Overall
2Canadian Spray Foam Systems Ltd.804.7★ (15)London, 21 km awaySat · Sun · Evenings—
3Net Zero Insulation804.9★ (142)London, 37 km awaySat · Evenings—
4Sprayco Insulation Inc.794.7★ (15)AylmerSat · Evenings—
5Great Northern Insulation784.7★ (368)London, 25 km away——
6Advanced Basement Systems774.9★ (172)London, 28 km away——
7Belform Insulation754.8★ (4)London, 28 km away——
8Home Choice Insulation755.0★ (5)London, 32 km awaySat · Sun—
9Ritchie's Insulation & General Contracting744.5★ (26)St. Thomas, 14 km away——
10Hometown Heating and Cooling744.9★ (827)Ingersoll, 32 km away—Most reviews

The 24 best insulation contractors in Aylmer, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

  1. Ranked #1 in Aylmer

    #1 Koala Insulation of London

    Based in London, 33 km away

    83/100CR Score

    Ranked #1 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 21 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2179 Flying Club Rd, London, ON N5V 3Z9
    View profile for Koala Insulation of London(226) 774-3802

  3. #3 Net Zero Insulation

    Based in London, 37 km away

    80/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.9★ from 142 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.9★ from 142 Google reviews
    Hours
    Mon–Sat 8 AM–8 PM · Sun closed
    Address
    1910 Highbury Ave N, London, ON N5X 0E5
    View profile for Net Zero Insulation(519) 914-6380

  4. #4 Sprayco Insulation Inc.

    Based in Aylmer

    79/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.7★ from 15 Google reviews
    Hours
    Mon–Fri 6 AM–8 PM · Sat 6 AM–5 PM · Sun closed
    Address
    54449 Eden Line, Aylmer, ON N5H 2R3
    View profile for Sprayco Insulation Inc.(226) 973-6982

  5. #5 Great Northern Insulation

    Based in London, 25 km away

    78/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.7★ from 368 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.7★ from 368 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
    Address
    2485 Innovation Drive, London, ON N6M 0C8
    View profile for Great Northern Insulation(800) 265-1914

  6. #6 Advanced Basement Systems

    Based in London, 28 km away

    77/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.9★ from 172 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.9★ from 172 Google reviews
    Hours
    Mon–Thu 8 AM–5 PM · Fri 8 AM–4 PM · Sat–Sun closed
    Address
    199 Exeter Rd Unit E, London, ON N6L 1A4
    View profile for Advanced Basement Systems(226) 271-8708

  7. #7 Belform Insulation

    Based in London, 28 km away

    75/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.8★ from 4 Google reviews, listed on Google as “Insulation contractor”.

    Based on 5 of 8 factors; credentials, recency and availability not yet collected.

    • 4.8★ from 4 Google reviews
    Address
    4231 Blakie Rd, London, ON N6L 1B8
    View profile for Belform Insulation(519) 652-5190

  8. #8 Home Choice Insulation

    Based in London, 32 km away

    75/100CR Score

    Ranked #8 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 5 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun 9 AM–3 PM
    Address
    414 King St, London, ON N6B 1S6
    View profile for Home Choice Insulation(226) 927-5555

  9. #9 Ritchie's Insulation & General Contracting

    Based in St. Thomas, 14 km away

    74/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.5★ from 26 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.5★ from 26 Google reviews
    Hours
    Mon–Thu 7:30 AM–5 PM · Fri 7:30 AM–12 PM · Sat–Sun closed
    Address
    43853 Southdale Line, St Thomas, ON N5P 3S6
    View profile for Ritchie's Insulation & General Contracting(519) 633-3461

  10. #10 Hometown Heating and Cooling

    Based in Ingersoll, 32 km away

    74/100CR Score

    Ranked #10 because of its Google rating and review volume: 4.9★ from 827 Google reviews, the most Google reviews on this list (827).

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.9★ from 827 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    113 Mutual St N, Ingersoll, ON N5C 1Z8
    View profile for Hometown Heating and Cooling(519) 425-0555

  11. #11 London Star Drywall

    Based in London, 36 km away

    73/100CR Score

    Ranked #11 because of its Google rating and trade focus: 3.6★ from 5 Google reviews, listed on Google as “Insulation contractor”.

    Based on 5 of 8 factors; credentials, recency and availability not yet collected.

    • 3.6★ from 5 Google reviews
    Address
    5 Farmhouse Ct, London, ON N5Y 5M4
    View profile for London Star Drywall(519) 630-6464

  12. #12 Foam 911 Inc

    Based in London, 31 km away

    73/100CR Score

    Ranked #12 because of its Google rating and trade focus: 2.7★ from 27 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 2.7★ from 27 Google reviews
    Hours
    Mon–Sun 8 AM–8 PM
    Address
    185 Ashland Ave, London, ON N5W 4E1
    View profile for Foam 911 Inc(519) 661-7788

  13. #13 Eco Insulation

    Based in London, 35 km away

    72/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.6★ from 57 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.6★ from 57 Google reviews
    Hours
    Mon–Fri 8 AM–4 PM · Sat–Sun closed
    Address
    611 Wonderland Rd N #381, London, ON N6H 5N7
    View profile for Eco Insulation(519) 673-6363

  15. #15 Driedger Brothers Insulation

    Based in Norfolk County, 31 km away

    72/100CR Score

    Ranked #15 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 13 Google reviews
    Hours
    Mon–Fri 7 AM–5:30 PM · Sat–Sun closed
    Address
    17 Wood St E, Norwich, ON N0J 1X0
    View profile for Driedger Brothers Insulation(519) 550-6368

  18. #18 Space Tech Insulation Ltd

    Based in Norfolk County, 28 km away

    69/100CR Score

    Ranked #18 because of its Google rating and trade focus: 3.9★ from 7 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 3.9★ from 7 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    969 Goshen Rd, Tillsonburg, ON N4G 3C9
    View profile for Space Tech Insulation Ltd(519) 485-0639

  19. #19 S & R Stucco & Insulation

    Based in London, 35 km away

    69/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.7★ from 10 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.7★ from 10 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    3657 Woodhull Rd, London, ON N6P 1P2
    View profile for S & R Stucco & Insulation(519) 652-9403

  20. #20 Icon Insulation London Shop

    Based in London, 31 km away

    68/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.7★ from 7 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.7★ from 7 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    3836 Colonel Talbot Rd, London, ON N6P 1H5
    View profile for Icon Insulation London Shop(519) 652-2442

  22. #22 Harp Exteriors

    Based in Lambton Shores, 25 km away

    65/100CR Score

    Ranked #22 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Siding contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 14 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    View profile for Harp Exteriors(226) 333-4277

  23. #23 RPM @ Home Team London

    Based in London, 32 km away

    65/100CR Score

    Ranked #23 because of its Google rating and review volume: 4.5★ from 42 Google reviews, 42 Google reviews.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.5★ from 42 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    466 King St, London, ON N6B 1T1
    View profile for RPM @ Home Team London(833) 952-5387

  24. #24 AM Group Exteriors - London

    Based in London, 28 km away

    65/100CR Score

    Ranked #24 because of its Google rating and review volume: 4.0★ from 254 Google reviews, 254 Google reviews.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.0★ from 254 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    4105 Blakie Rd, London, ON N6L 1A4
    View profile for AM Group Exteriors - London(519) 668-1555

How much do insulation contractors cost in Aylmer?

US national ranges converted to CAD, not adjusted for Aylmer. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Aylmer?
JobLowTypicalHighBasisChecked
Attic insulationCA$2,390CA$2,950CA$3,510Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)October 2026

How we ranked Aylmer insulation contractors

We scored 24 Aylmer insulation contractors on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Aylmer data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Insulation contractors in Aylmer: frequently asked questions

Who is the best insulation contractor in Aylmer?

By CR Score, the highest-ranked insulation contractor in Aylmer, ON is Koala Insulation of London with a CR Score of 83/100. It has 5.0★ from 21 Google reviews. It is open 24/7. Canadian Spray Foam Systems Ltd. (#2) and Net Zero Insulation (#3) follow. We ranked 24 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in Aylmer?

ContractorsRanked ranks 24 insulation contractors serving Aylmer, ON. 1 of them is based in Aylmer; the rest serve it from nearby towns. Counts are as of October 2026.

Which insulation contractors in Aylmer are open 24/7?

2 ranked insulation contractors in Aylmer post 24/7 hours. The highest-ranked are Koala Insulation of London (#1) and Active Environmental Safety (#14). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in Aylmer work on weekends?

7 of 24 ranked insulation contractors post Saturday hours and 5 post Sunday hours. The highest-ranked open Saturdays are Koala Insulation of London (#1), Canadian Spray Foam Systems Ltd. (#2) and Net Zero Insulation (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Aylmer?

Attic insulation typically costs CA$2,390 to CA$3,510, with CA$2,950 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Aylmer. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Aylmer insulation contractors have?

The median Google rating among 24 rated insulation contractors in Aylmer is 4.7★, with a median of 15 reviews. Hometown Heating and Cooling has the most, 827 reviews, and ranks #10. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank insulation contractors?

Each insulation contractor gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do insulation contractors outside Aylmer count in this ranking?

Yes, if they are within 40 km of the Aylmer city centre, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for Aylmer

  1. October 2026: CR Scores recalculated for 24 insulation contractors serving Aylmer.

More insulation contractors and Aylmer pages

Other trades in Aylmer